The Source engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven, shader-based renderer, accurate lip sync and facial expression technology, and a powerful, efficient and completely network-enabled physics system.

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No need to say anything.

Awesome. :3

Overrated engine

May sound crazy but i like gold source better. This is still fantastic but it is missing one thing that will probably come to it one day. NOSTALGIA!

Source is a fantastic engine, capable of great things. It by FAR has he most support available out of all the different engines I have exparamented with. The Hammer editor is fantastically intuitive to use. All around fantastic!

This is the best engine I have ever seen.


Very good, a little outdated but very good.

It's pretty good, but can be buggy as hell.

Probably the best engine of the last decade!

Simply the best game engine in the world

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